<ul>
<li>Introduction</li>
<li>Our System Design
<ul>
<li>Data Access and the Sensor Hive</li>
<li>Virtual Things</li>
<li>Event Management</li>
<li>The Service Layer</li>
<li>The User Interface Layer</li>
</ul>
</li>
<li>A Demonstrator IoT Application
<ul>
<li>Real-Time Visualizer and Monitor</li>
<li>Rules Composer</li>
</ul>
</li>
<li>Future Research Directions
<ul>
<li>Things Discovery in IoT</li>
<li>Data Management in IoT</li>
<li>Transaction Handling in IoT</li>
<li>Security and Privacy in IoT</li>
</ul>
</li>
<li>Acknowledgments</li>
<li>References</li>
</ul>